Here’s a list of Sox pitchers with the lowest ERAs after three career games (min. 17.2 inning) since 1920:
ERA—PITCHER, YEAR
1.33—JACK MCDOWELL, 1987
1.50—FRANK MACK, 1922
2.04—SHOVEL HODGE, 1920
2.04—SHANE SMITH, 2025
2.14—BILL CHAMBERLAIN, 1932
2.14—ALEX FERNANDEZ, 1990
2.28—EDDIE LOPAT, 1944
2.44—LES TIETJE, 1933
2.49—RAMON GARCIA, 1991
2.84—LUIS ANDUJAR, 1995